Try reinstalling the software and make sure you have the latest version. Also, try running the software in compatibility mode or as administrator. If this doesn't work, try disabling any anti-virus software temporarily and see if that helps. If all else fails, contact Wondershare support for further assistance.
If you prefer to use a different video editing software, Movavi could be a good alternative. Make sure that your computer meets the minimum system requirements for Movavi (
https://www.movavi.com/). You can also check for any compatibility issues before installing the software. If you encounter any problems during the installation process or while using the software, reach out to the Movavi support team for assistance.